TWM482863U - Full band antenna - Google Patents

Description

Full-band antenna

This creation relates to an antenna structure for radio frequency communication, and more particularly to a full-band antenna that miniaturizes the size of various antenna types and increases the reception band.

Today's society is the era of wireless communication. With the continuous improvement of various communication devices, various communication products industries are booming, especially the mobile devices are convenient and portable, and become the main communication equipment. In addition, in order to meet the diverse needs, the action is also made. Device communication has been converted from a dual-frequency operation to a multi-frequency operation.

The antenna is a microwave device that is designed to transmit electromagnetic energy in a particular direction. Its main function is to effectively radiate the signal of the transmitter into the free space, or to effectively couple the radio signal transmitted from the far end to the receiver, so the antenna can be regarded as an energy converter. At present, the common mobile device embedded antennas mainly have the following types: Monopole Antenna, Dipole Antenna, Planar Inverted-F Antenna (PIFA Antenna), and loop antenna (Loop Antenna).

Among them, the monopole antenna (Dipole Antenna) and the dipole antenna (Dipole Antenna) have better transmission and reception power, but they have the problem of SAR testing, and are less able to meet the electromagnetic wave energy absorption ratio test.

Although Planar Inverted-F Antenna (PIFA Antenna) has the advantage of space utilization, it can be embedded in the mechanism to beautify the appearance of the product, but it is often limited by the complexity of the space to reduce the transmission distance.

Loop Antenna is usually used for high frequency signal transmission. Loss, but its high input impedance makes it difficult to apply to small communication devices.

A full-band hidden antenna (Full Band-Internal Antenna) is developed for a mobile communication device. Please refer to FIG. 1 . The conventional full-band antenna is disposed above a dielectric layer 10 and has a first radiation. a section 11 and a second radiating section 12, one end of the first radiating section 11 extends to form a branch section 13, and the branch section 13 and a short-circuiting section 14 are electrically connected to each other, the branch section 13 further comprising an adjustment section 15; an extension section 16 is disposed on the right side of the second radiation section 12, and a long arm is extended along the first radiation section 11 on the left side of the second radiation section 12 Part 17; However, in order to meet the requirements of electrical regulations, the overall design size of the antenna still has a large space, such as 80x13x0.4mm and 70x13x0.4mm, which are difficult to meet the versatility of today's mobile devices. Miniaturized features.

In view of this, it is necessary to provide a hidden antenna structure designed by a spiral and multiple coupling mechanism, which has a miniaturized size and can receive multi-band frequencies and also meets electrical regulations.

The main purpose of this creation is to provide a full-band antenna suitable for various antenna types, so that various types of antennas can still reduce the overall size of the antenna and comply with the relevant electrical regulations while maintaining the existing structure. To achieve the purpose of miniaturization.

The secondary purpose of this creation is that the full-band antenna, in addition to retaining the fixed frequency range of the legacy antenna, also forms at least one set of adjustable frequency ranges different from the fixed frequency range, increasing the radio frequency communication band to which the antenna is applied.

Another purpose of this creation is to change the line width and the distance between each other. The frequency distribution area and the frequency range of the adjustable frequency can be changed immediately to meet the requirements of different use states, and the industrial applicability is greatly improved.

In order to achieve the foregoing object, the first embodiment of the present invention is a full-band antenna The method includes a dielectric layer, a first patterned conductive layer, and a second patterned conductive layer, wherein the first patterned conductive layer and the second patterned conductive layer are both disposed on the dielectric layer.

The first patterned conductive layer has a feeding portion, and extends outwardly from the feeding portion to form a loop portion having a plurality of loop turns, the loop portion having a plurality of radiating segments coupled to each other; The patterned conductive layer has a conductive portion and a short-circuit portion, and the conductive portion forms a fixed frequency of the at least one general-type antenna; the present invention forms at least one adjustable frequency through the multiple coupling effect between the plurality of radiating segments The adjustable frequency of the loop portion is adjusted by the line width of the radiation section and the pitch of each other, and the frequency distribution area and the frequency range are adjusted to increase the frequency band of the radio frequency communication to which the antenna is applied.

In a possible embodiment, the conductive portion of the full-band antenna of the present invention has a first radiating section parallel to the side of the loop portion, and the first radiating section extends at one end to form a branch section, and the branch An adjustment section for finely adjusting the fixed frequency is disposed, and a branch section is connected to the short circuit portion; the first radiation section is provided with a convex section corresponding to the position of the loop part, and is protruded by the protrusion The segment forms a coupling effect with the loop portion; the conductive portion is further provided with a second radiating portion connected to the feeding portion, and the second radiating portion has an extending portion.

In another possible embodiment, the conductive portion of the full-band antenna of the present invention has a first radiation section and a second radiation section parallel to the first radiation section, the first radiation section and the second radiation. One end of the segment is connected to a branch segment, and the other end of the second radiating segment is connected to the feeding portion, and the branch portion is connected to the shorting portion.

In still another possible embodiment, the conductive portion of the full-band antenna of the present invention has a connecting portion connected to the loop portion, and a first radiating portion is connected by the connecting portion, and then the first radiation is The segment extends a branching section connected to the short-circuiting portion, and the branching section is convexly provided with a branching section for finely adjusting the short-circuiting portion, and the branching section is convexly provided with an adjusting section for fine-tuning the fixed frequency. The feeding portion has two conducting sections which are electrically connected to the lower surface of the dielectric layer, and the first ends of the two conducting sections are respectively connected to the loop portion and a signal feeding line, and the two conducting sections are The second end is further connected to each other by a line segment.

In the foregoing three embodiments, the shape of the loop of the loop portion of the present invention can be set to a square shape, and of course, it can be set as a rectangle, a circle, a triangle or a polygon according to the design requirements. In one of them, of course, the separation distance between each other can also form a plurality of different separation distance patterns in the same loop portion.

The feature of this creation is to increase the spiral loop portion and improve the problem that the conventional antenna is difficult to reduce in order to meet the requirements of electrical regulations, thereby saving space and manufacturing costs. In addition, the multi-coupling mechanism design effectively adjusts the required frequency, has different frequency distribution areas, and increases the acceptance frequency range, so that various types of antennas have full frequency bands and miniaturized sizes, thereby improving the application of the multifunctional industry.

(known)

10‧‧‧Dielectric layer

11‧‧‧First Radiation Section

12‧‧‧second radiation section

13‧‧‧ branch section

14‧‧‧ Short circuit

15‧‧‧Adjustment section

16‧‧‧Extended section

17‧‧‧Long arm

(this creation)

2‧‧‧Dielectric layer

3‧‧‧First patterned conductive layer

31‧‧‧Feeding Department

311‧‧‧ conduction section

311a‧‧‧ first end

311b‧‧‧ second end

311c‧‧‧Line section

32‧‧‧Return

33‧‧‧radiation section

4‧‧‧Second patterned conductive layer

41‧‧‧Electrical Department

411‧‧‧First Radiation Section

411a‧‧‧ protruding section

412‧‧‧second radiation section

412a‧‧‧Extended section

42‧‧‧ branch section

421‧‧‧Adjustment section

43‧‧‧ Short circuit

44‧‧‧Connecting section

5‧‧‧ Signal Feeding Line

Figure 1 is a schematic diagram of a conventional full-band antenna structure; Figure 2 is a schematic diagram of a full-band antenna structure; Figure 3 is a frequency response measurement diagram of a conventional full-band antenna; and Figure 4 is a frequency response measurement of a full-band antenna according to the present invention. Figure 5 is a comparison of the frequency response measurement of the conventional antenna and the full-band antenna of the present invention; Figure 6 is a comparison of the antenna radiation efficiency of the conventional antenna and the present full-band antenna; Embodiment FIG. 8 is a schematic diagram showing the front structure of the full-band antenna of the third embodiment; FIG. 9 is a schematic diagram showing the back structure of the full-band antenna of the third embodiment; Figure 10 is a schematic cross-sectional view of Figure 8.

In order to further understand and understand the structure, use and characteristics of this creation, a better and more detailed understanding and understanding are given. The preferred embodiment is described in detail with the following figures: Please juxtapose Figure 1 and Figure 2 Referring to the present invention, the length of the first radiation section 411 of the present invention is 60 mm, which is reduced by about 14 to 25% compared with the antenna dimensions of conventional antennas of 70 mm and 80 mm.

As shown in FIG. 2 , the full-band antenna of the present invention includes a dielectric layer 2 , a first patterned conductive layer 3 and a second patterned conductive layer 4 disposed above the dielectric layer 2 , the antenna The material is a conductor material and has a small size that can be easily used in mobile device communication products.

As shown in the figure, in the first preferred embodiment, the first patterned conductive layer 3 of the present invention has a feed portion 31 connected to a feed signal line (not shown), and is turned to the left by the feed portion 31. Extending to form a loop portion 32 having a plurality of loop turns, and the loop portion 32 has a plurality of radiating segments 33 coupled to each other, and the loop shape of the loop portion 32 may be a rectangle or a circle. One of a shape, a triangle, or a polygon.

The antenna having the full frequency band has a loop portion 32 having a plurality of turns and a radiating portion 33. The loop portion 32 is in a spiral shape, and the number of spiral turns can be 3, and the pitch of each radiating portion 33 can be 0.3 mm, and having a spiral width width of 0.8 mm; the first radiating section 411 is parallel to the loop portion 32, and has a protruding section 411a and a loop portion 32 spaced apart from each other and corresponding to each other, using The plurality of radiating sections 33 of the upper loop portion 32 are multi-coupled to each other and the common mechanism of the loop portion 32 and the convex section 411a of the first radiating section 411 are also coupled to each other, so that The full-band antenna of the present invention has at least one variable frequency, that is, the effect of changing the frequency can be achieved according to the number of helical turns of the adjusting loop portion 32, the spacing, position and shape of the radiating section 33, wherein the variable frequency The frequency range is between 1410MHz~ Between 1510MHz.

The second patterned conductive layer 4 is formed by a conductive portion 41 forming a fixed frequency and a short-circuit portion 43 for grounding. The conductive portion 41 has a first radiating portion 411 and a second radiating portion 412. The first radiating section 411 and the second radiating section 412 are parallel to each other, and are connected to each other by a branch section 42 formed by vertically extending from one end of the first radiating section 411, and one end of the branch section 42 thereof. The short-circuit portion 43 is connected to the grounding signal line for mating with a ground signal line. The second radiating section 412 has an extending section 412a parallel to the first radiating section 411, and the exposed structure is such that the first radiating section 411 of the full-band antenna conducting portion 41 has a fixed frequency of 704-960 MHz. The low frequency range; the second radiating section 412 is fixed at a high frequency range of 1710 to 2170 MHz.

Furthermore, the first radiating section 411 is provided with a convex adjusting section 421 on the branching section 42 for reducing the overall structural impedance of the antenna, and the shape and area of the convex adjusting section 421 are adjusted to be fine-tuned. The fixed frequency of the conductive portion 41.

Please refer to Figures 3, 4, and 5, where the X-axis is the frequency band and the Y-axis is the dB value. It can be seen that this creation is compared with the conventional full-band antenna. At the same frequency point, the original case has a larger bandwidth. The small peak value is compared with the frequency response measurement chart of the conventional antenna of Fig. 5 and the full-band antenna of the present invention. It can be clearly seen that the whole frequency band of the present invention has a small reflection loss, which represents a better matching.

Continuing to refer to the antenna radiation efficiency comparison diagram of Fig. 6, the X-axis is represented as the frequency band, and the Y-axis is expressed as the absolute gain of the antenna. It can be seen from the figure that the full-band antenna of the present invention has better antenna absolute gain in both the low frequency and the high frequency band. It can be seen that this creation has better antenna radiation efficiency. As shown in Figures 3, 4, 5, and 6, the full-band antenna of this creation has good performance and electrical properties regardless of reflection loss and antenna radiation efficiency, so even this The created full-band antenna has a miniaturized size that ensures more optimized performance.

Referring to the second preferred embodiment shown in FIG. 7, the present full-band antenna is applied to a Planar Inverted-F Antenna (PIFA Antenna) in which a spiral is formed about the first patterned conductive layer 3. The loop portion 32 has the same structure as the first preferred embodiment, and will not be described herein. However, the second patterned conductive layer 4 defines the conductive portion 41 as a first radiating portion 411 and a A second radiating section 412 in which the radiating sections 411 are parallel to each other, one end of the first radiating section 411 and the second radiating section 412 are connected to a branch section 42, and the branch section 42 is connected to the short-circuiting section 43. The other end of the second radiating section 412 is connected to the feeding portion 31, and the structure of the loop portion 32 is coupled with a feeding portion 31, so that the radiating portion 33 of the loop portion 32 has a multiple coupling mechanism. At least one variable frequency is generated of approximately 1700 MHz.

Referring to the third preferred embodiment shown in Figures 8, 9, and 10, the full-band antenna of the present invention can also be applied to a loop antenna. Similarly, the first patterned conductive layer 3 is identical to the first two implementations. For example, the second patterned guiding layer 4 is formed by connecting the conductive portion 41 to the connecting portion 44 connected to the loop portion 32, and is connected by the connecting portion 44. The radiating section 411 is further connected to the first radiating section 411, and a branching section 42 is connected to a short-circuiting portion 43. The branching section 42 is convexly provided with an adjusting section 421 for fine-tuning the fixed frequency; The receiving portion 31 has a conducting portion 311 which is electrically connected to the lower surface of the upper surface of the dielectric layer 2, and the first end 311a of the two conducting portions 311 are respectively connected to the loop portion 32 and a signal feeding line 5, the signal The signal of the feed line 5 travels along the conduction section 311 to the second end 311b via the first end 311a, and is transmitted from the second end 311b to the line section 311c of the lower surface of the dielectric layer 2, and continues along the dielectric layer. 2 the lower surface line section 311c is transmitted to the second end of the other conduction section 311 311b, again introduced into the conduction section 311 inside the dielectric layer 2, and derived by the other first end 311a connected to the loop portion 32; the third embodiment also increases the structure of the loop portion 32 by A feed portion 31 is coupled such that the loop of the loop portion 32 is The shot section 33 has a multiple coupling mechanism to produce at least one variable frequency of approximately 2500 to 2600 MHz.

The first embodiment, the second embodiment and the third embodiment of the present invention have the common feature that the antenna-specific structures are coupled to each other by adding a spiral shape loop portion 32 to form an adjustable bandwidth, thereby applying the same. In a variety of antenna structures, the overall size of the antenna is miniaturized and the required bandwidth is covered.

The above embodiments are used for convenience only to illustrate that the present invention is not limited. In the spirit of the creative spirit, all kinds of simple deformations and modifications made by those skilled in the industry in accordance with the scope of the patent application and the creative description of the creation should still be It is included in the scope of the following patent application.

2‧‧‧Dielectric layer

3‧‧‧First patterned conductive layer

31‧‧‧Feeding Department

32‧‧‧Return

33‧‧‧radiation section

4‧‧‧Second patterned conductive layer

41‧‧‧Electrical Department

411‧‧‧First Radiation Section

411a‧‧‧ protruding section

412‧‧‧second radiation section

412a‧‧‧Extended section

42‧‧‧ branch section

421‧‧‧Adjustment section

43‧‧‧ Short circuit

Claims (11)

A full-band antenna includes: a dielectric layer; a first patterned conductive layer disposed on the dielectric layer, having a feed portion extending outward from the feed portion to form a plurality of turns a loop portion having a plurality of radiating segments coupled to each other and forming at least one adjustable frequency by a multiple coupling effect between the plurality of radiating segments; and a second patterned conductive layer disposed on the loop portion The dielectric layer has a conductive portion and a short circuit portion, and the conductive portion forms at least one fixed frequency; wherein the adjustable frequency of the loop portion is changed by the line width of the radiation portion and the pitch of each other, and the frequency is adjusted. Distribution area and frequency range size. The full-band antenna according to claim 1, wherein the loop shape of the loop portion is one of a rectangle, a circle, a triangle, or a polygon. The full-band antenna according to claim 1, wherein the conductive portion has a first radiating portion parallel to a side of the loop portion, and one end of the first radiating portion extends to form a branch portion. And the branching section is connected to the short-circuiting portion. The full-band antenna according to claim 3, wherein the first radiating section has a convex section corresponding to the position of the loop portion, and a coupling effect is formed by the protruding section and the loop part. . The full-band antenna according to claim 3, wherein the branching section is convexly provided with an adjustment section for fine-tuning the fixed frequency. The full-band antenna according to claim 1, wherein the conductive portion is further provided with a second radiation region connected to the feeding portion. segment. The full-band antenna according to claim 6, wherein the second radiating section is further provided with an extending section. The full-band antenna according to claim 1, wherein the conductive portion has a first radiating portion and a second radiating portion parallel to the first radiating portion, the first radiating portion and One end of the second radiating section is connected to a branch section, and the other end of the second radiating section is connected to the feeding portion, and the branching section is connected to the shorting portion. The full-band antenna according to claim 1, wherein the conductive portion has a connecting portion connected to the loop portion, and the first radiating portion is connected by the connecting portion, and then A radiating section extends a branch section that is coupled to the shorting portion. The full-band antenna according to claim 9, wherein the branching section is convexly provided with an adjustment section for fine-tuning the fixed frequency. The full-band antenna according to claim 9, wherein the feeding portion has two conducting sections that are electrically connected to the lower surface by the upper surface of the dielectric layer, and the first ends of the two conducting sections are respectively connected to the above The loop portion and a signal feed line, and the second ends of the two conductive segments are connected to each other by a line segment.